Lost Generation is a term that has come to define a group of American writers who lived and rose to prominence in Europe during the 1920's. The principal figures in the group included Gertrude Stein, Ernest Hemingway, Ezra Pound, F. Scott Fitzgerald, E. E. Cummings, John Dos Passos, Thornton Wilder, and Hart Crane. These writers helped establish many of the stylistic and thematic foundations of modern literature.